Research is only as good as its sources. Today, the Internet and library research databases provide an unprecedented amount of information for conducting research. The question is no longer where the sources are, but which ones should be used. Conducting a review of existing literature and data to determine its use requires a systematic approach. In 250 to 300 words, address three factors you believe should be considered when evaluating sources for use in research. Make sure to address ways in which you would identify and assess bias, validity, and applicability of information sources.